Home / 1,040,635.40-1,559,916.30-478,689.80

Finding the Fourth Proportional to 1,040,635.40, 1,559,916.30 and 478,689.80

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Solution

The fourth proportional to 1,040,635.40, 1,559,916.30 and 478,689.80 is: 717,557.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,040,635.40 : 1,559,916.30 = 478,689.80 : x
  2. Step 2: Convert to fraction form
    1,040,635.40/1,559,916.30 = 478,689.80/x
  3. Step 3: Cross multiply
    1,040,635.40x = 1,559,916.30 × 478,689.80
  4. Step 4: Simplify right side
    1,040,635.40x = 746,716,021,663.74
  5. Step 5: Solve for x
    x = 746,716,021,663.74/1,040,635.40
  6. Step 6: Final answer
    x = 717,557.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.